đź’ˇ : U.S. ZIP Codes are always 5 digits in their basic form; the expanded ZIP+4 system uses 9 digits .
15642 is a valid ZIP Code for , and areas in Westmoreland County . However, 156421 is a 6-digit number and does not exist as a standard 5-digit United States ZIP Code.
A mix of historic borough residential areas and suburban developments.
Most students in this ZIP Code attend the Norwin School District . Demographics & Economy
Served by U.S. Route 30 and the Pennsylvania Turnpike (I-76), which has an exit in the area.